lily/pitch-interval.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2004--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "pitch-interval.hh"
  21
  22 #include "interval.tcc"
  23
  24 Pitch_interval::Pitch_interval (Pitch p1, Pitch p2)
  25 {
  26   at (LEFT) = p1;
  27   at (RIGHT) = p2;
  28 }
  29
  30 Pitch_interval::Pitch_interval ()
  31 {
  32   at (LEFT) = Pitch (100, 0, 0);
  33   at (RIGHT) = Pitch (-100, 0, 0);
  34 }
  35
  36 bool
  37 Pitch_interval::is_empty () const
  38 {
  39   return at (LEFT) > at (RIGHT);
  40 }
  41
  42 Drul_array<bool>
  43 Pitch_interval::add_point (Pitch p)
  44 {
  45   Drul_array<bool> expansions(false,false);
  46   if (at (LEFT).tone_pitch () > p.tone_pitch ())
  47     {
  48       at (LEFT) = p;
  49       expansions [LEFT] = true;
  50     }
  51   if (at (RIGHT).tone_pitch () < p.tone_pitch ())
  52     {
  53       at (RIGHT) = p;
  54       expansions [RIGHT] = true;
  55     }
  56   return expansions;
  57 }
  58
  59
  60 Pitch_lexicographic_interval::Pitch_lexicographic_interval (Pitch p1, Pitch p2)
  61 {
  62   at (LEFT) = p1;
  63   at (RIGHT) = p2;
  64 }
  65
  66 Pitch_lexicographic_interval::Pitch_lexicographic_interval ()
  67 {
  68   at (LEFT) = Pitch (100, 0, 0);
  69   at (RIGHT) = Pitch (-100, 0, 0);
  70 }
  71
  72 bool
  73 Pitch_lexicographic_interval::is_empty () const
  74 {
  75   return at (LEFT) > at (RIGHT);
  76 }
  77
  78 Drul_array<bool>
  79 Pitch_lexicographic_interval::add_point (Pitch p)
  80 {
  81   Drul_array<bool> expansions(false,false);
  82   if (at (LEFT) > p)
  83     {
  84       at (LEFT) = p;
  85       expansions [LEFT] = true;
  86     }
  87   if (at (RIGHT) < p)
  88     {
  89       at (RIGHT) = p;
  90       expansions [RIGHT] = true;
  91     }
  92   return expansions;
  93 }